Here's a pic of just something I threw together with my tiles and palette.
As you can see, the colors blend together way too easily which hides the outlines and whatnot.
I'm about 99% sure that this is close to how the colors were on one of the gameboys(I also know about the greenscale too but I like this one better).
If I remember correctly, the backgrounds/tiles on the original GB could use 4 scales of one color while sprites usually used only 3.
I just need help on how to make it fit together correctly and not have everything blend in.